PNG ICO ICNS MORE
UI
Pixel
Gnome icons
mail, Accounts
Firebrick
24x24
Shopping & e-commerce
Smooth
Woothemes Ultimate Icon Set
shopping basket, Add, ecommerce
128x128
3D
Glaze
Add, bookmark
64x64
bookmarks, Add, list
Network & communications
Oxygen
bell, Alarm
48x48
Desktop apps
Circular
denied, Access, cancel
16x16
Fugue Icons
Arrow, Eraser